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EP 1 481 342 A1

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(43) Date of publication: 01.12.2004 Bulletin 2004/49 (21) Application number: 02807016.7 (22) Date of filing: 18.03.2002

(51) International Patent Classification (IPC)7: G06F 17/60, G07F 17/32, G06F 17/24, G06F 19/00 (86) International application number: PCT/US2002/008070 (87) International publication number: WO 2003/075203 (12.09.2003 Gazette 2003/37)

(84) Designated Contracting States: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR Designated Extension States: AL LT LV MK RO SI (30) Priority: 28.02.2002 US 85779 (71) Applicant: IGT Reno, NV 89511 (US)	(72) Inventors: NGUYEN, Binh, T. Reno, NV 89511 (US) PAULSEN, Craig, A. Reno, Nevada 89511 (US) B-JENSEN, Michael, T. Reno, NV 89509 (US) (74) Representative: Körber, Martin, Dipl.-Phys.  Mitscherlich & PartnerPatentanwälteSonnenstrasse 33 80331 München 80331 München (DE)